Actual value

The greenhouse gas emission saving for some or all of the steps of a specific biofuel production process. (2009/28/EC)

Aerothermal energy

Energy stored in the form of heat in the ambient air. (2009/28/EC)


A demand service provider that combines multiple short-duration consumer loads for sale or auction in organised energy markets. (Energy Efficiency Directive)

Components and sub-assemblies

Means parts intended to be incorporated into EuPs, and which are not placed on the market and/or put into service as individual parts for end-users or the environmental performance of which cannot be assessed independently. (Directive 2005/32/EC)

District Heating

District heating means a system supplying heat produced centrally in one or several locations to a non-restricted number of customers. It is a distributed on a commercial basis by means of a distribution network using hot water or steam as a medium. (COGEN Europe)


The integration of environmental aspects into product design with the aim of improving the environmental performance of the EuP throughout its whole life cycle. (Directive 2009/125/EC)

Ecodesign requirement

Any requirement in relation to an EuP, or the design of an EuP, intended to improve its environmental performance, or any requirement for the supply of information with regard to the environmental aspects of an EuP. (Directive 2005/32/EC)

Ecological profile

A description, in accordance with the implementing measure applicable to the EuP, of the inputs and outputs (such as materials, emissions and waste) associated with an EuP throughout its life cycle which are significant from the point of view of its environmental impact and are expressed in physical quantities that can be measured. (Directive 2005/32/EC)

Economically justifiable demand

The demand that does not exceed the needs for heat or cooling and which would otherwise be satisfied at market conditions by energy generation processes other than cogeneration. (Energy Efficiency Directive)

Efficient district heating and cooling

A district heating or cooling system using at least 50 % renewable energy, 50 % waste heat, 75 % cogenerated heat or 50 % of a combination of such energy and heat. (Energy Efficiency Directive)

Efficient heating and cooling

A heating and cooling option that, compared to a baseline scenario reflecting a business-as-usual situation, measurably reduces the input of primary energy needed to supply one unit of delivered energy within a relevant system boundary in a cost- effective way, as assessed in the cost-benefit analysis referred to in this Directive, taking into account the energy required for extraction, conversion, transport and distribution. (Energy Efficiency Directive)

Efficient individual heating and cooling

An individual heating and cooling supply option that, compared to efficient district heating and cooling, measurably reduces the input of non-renewable primary energy needed to supply one unit of delivered energy within a relevant system boundary or requires the same input of non-renewable primary energy but at a lower cost, taking into account the energy required for extraction, conversion, transport and distribution. (Energy Efficiency Directive)

Energy audit

a systematic procedure with the purpose of obtaining adequate knowledge of the existing energy consumption profile of a building or group of buildings, an industrial or commercial operation or installation or a private or public service, identifying and quantifying cost-effective energy savings opportunities, and reporting the findings. (Energy Efficiency Directive)

Energy distributor

A natural or legal person, including a distribution system operator, responsible for transporting energy with a view to its delivery to final customers or to distribution stations that sell energy to final customers. (Energy Efficiency Directive)

Energy Efficiency

The ratio of output of performance, service, goods or energy, to input of energy (Energy Efficiency Directive)

Energy efficiency improvement

An increase in energy efficiency as a result of technological, behavioural and/or economic changes. (Energy efficiency directive)

Energy management system

A set of interrelated or interacting elements of a plan which sets an energy efficiency objective and a strategy to achieve that objective. (Energy Efficiency Directive)

Energy performance contracting

A contractual arrangement between the beneficiary and the provider of an energy efficiency improvement measure, verified and monitored during the whole term of the contract, where investments (work, supply or service) in that measure are paid for in relation to a contractually agreed level of energy efficiency improvement or other agreed energy performance criterion, such as financial savings. (Energy Efficiency Directive)

Energy performance of a building

The calculated or measured amount of energy needed to meet the energy demand associated with a typical use of the building, which includes, inter alia, energy used for heating, cooling, ventilation, hot water and lighting (Directive 2010/31/EC)

Energy recovery

The use of combustible waste as a means to generate energy through direct incineration with or without other waste but with recovery of the heat. (Directive 2005/32/EC)

Energy savings

An amount of saved energy determined by measuring and/or estimating consumption before and after implementation of one or more energy efficiency improvement measures, whilst ensuring normalisation for external conditions that affect energy consumption (Energy Efficiency Directive)

Energy Service

The physical benefit, utility or good derived from a combination of energy with energy-efficient technology or with action, which may include the operations, maintenance and control necessary to deliver the service, which is delivered on the basis of a contract and in normal circumstances has proven to result in verifiable and measurable or estimable energy efficiency improvement or primary energy savings. (Energy Efficiency Directive)

Energy Service Provider

A natural or legal person who delivers energy services or other energy efficiency improvement measures in a final customer’s facility or premises. (Energy Efficiency Directive)

Energy-using product (EuP)

A product which, once placed on the market and/or put into service, is dependent on energy input (electricity, fossil fuels and renewable energy sources) to work as intended, or a product for the generation, transfer and measurement of such energy, including parts dependent on energy input and intended to be incorporated into an EuP covered by this Directive which are placed on the market and/or put into service as individual parts for end-users and of which the environmental performance can be assessed independently. (Directive 2005/32/EC)

Environmental performance (of an EuP)

The results of the manufacturer's management of the environmental aspects of the EuP, as reflected in its technical documentation file. (Directive 2005/32/EC)

European standard

A standard adopted by the European Committee for Standardisation, the European Committee for Electrotechnical Standardisation or the European Telecommunications Standards Institute and made available for public use. (Energy Efficiency Directive)

Final energy consumption

Means all energy supplied to industry, transport, households, services and agriculture. It excludes deliveries to the energy transformation sector and the energy industries themselves. (Energy Efficiency Directive)

Generic ecodesign requirement

Any ecodesign requirement based on the ecological profile as a whole of an EuP without set limit values for particular environmental aspects. (2009/125/EC)

Gross final consumption of energy

The energy commodities delivered for energy purposes to industry, transport, households, services including public services, agriculture, forestry and fisheries, including the consumption of electricity and heat by the energy branch for electricity and heat production and including losses of electricity and heat in distribution and transmission (2009/28/EC).

Individual action

An action that leads to verifiable, and measurable or estimable, energy efficiency improvements and is undertaken as a result of a policy measure. (Energy Efficiency Directive)

International standard

A standard adopted by the International Standardisation organisation and made available to the public. (Energy Efficiency Directive)

Life cycle

The consecutive and interlinked stages of an EuP from raw material use to final disposal. (Directive 2005/32/EC)

Obligated party

An energy distributor or retail energy sales company that is bound by national energy efficiency obligation schemes. (Energy Efficiency Directive)

Overall efficiency

The annual sum of electricity and mechanical energy production and useful heat output divided by the fuel input used for heat produced in a cogeneration process and gross electricity and mechanical energy production. (Energy Efficiency Directive)

Power to heat ratio

The ratio between electricity from cogeneration and useful heat when operating in full cogeneration mode using operational data of the specific unit (Energy Efficiency Directive)

Primary Energy

Energy in its original form that has not been subjected to any conversion or transformation process.

Primary Energy Consumption

Primary energy consumption means gross inland consumption, excluding non-energy uses. (Energy Efficiency Directive)

Primary Energy Factor (PEF)

The relationship between the energy content of primary energy and secondary energy sources. It is calculated by dividing the energy content of primary energy with the energy content of secondary energy. The PEF is used to calculate primary energy consumption which is indirectly caused by the consumption of secondary energy.

Renewable energy obligation

"Renewable energy obligation" means a national support scheme requiring energy producers to include a given proportion of energy from renewable sources in their production, requiring energy suppliers to include a given proportion of energy from renewable sources in their supply, or requiring energy consumers to include a given proportion of energy from renewable sources in their consumption. This includes schemes under which such requirements may be fulfilled by using green certificates. (2009/28/EC)


Any operation by which an EuP or its components, having reached the end of their first use, are used for the same purpose for which they were conceived, including the continued use of an EuP which is returned to a collection point, distributor, recycler or manufacturer, as well as reuse of an EuP following refurbishment. (Directive 2005/32/EC)

Specific ecodesign requirement

A quantified and measurable ecodesign requirement relating to a particular environmental aspect of an EuP, such as energy consumption during use, calculated for a given unit of output performance. (Directive 2009/125/EC)

Technical building system

Technical equipment for the heating, cooling, ventilation, hot water, lighting or for a combination thereof, of a building or building unit. (Directive 2010/31/EC)

Typical value

"Typical value" means an estimate of the representative greenhouse gas emission saving for a particular biofuel production pathway (2009/28/EC).

Useful Heat

Heat produced in a cogeneration process to satisfy economically justifiable demand for heating or cooling. (Energy Efficiency Directive)